which of the following statements accurately describes viruses?

- the presence of a defense mechanism that prevents the toxin from reaching its target or repairs the damage that the toxin causes e. Extracellular bacterial infections are common in deficiency syndromes with T-cell defects. Increased frequency:decreased depth of penetration C. Increased blood flow:greater temperature increase D. Increased water content:increased ultrasound absorption c. T cells; CD8 The color change indicates that the iodine molecules were small enough to diffuse across the membrane and react with the starch inside the cell. *two answers*, which of the following. Choose ALL that apply. 3. e. MHC class II. 5. Though categorizing toxins based on potency is useful, it is complicated by differences in individual and species reactions to particular chemicals. Car accidents and firearm assaults - These have risks between 1 in 103 to 1 in 285 This study aims to present a robust numerical model by . d. immune evasion a. e. cytokine and cytokine receptor production. e. the initial phase of infection is followed by clinical latency. The students placed an X for each structure that was viewed for each cell on the table shown. Chemicals are generally divided into oil-soluble and water-soluble types. a. 15. answer choices They DO respond to a stimulus They need a host's energy because they do not have their own energy b. Antigenic shift; antigenic drift - Chronic conditions such as cardiovascular disease and diabetes are increasing and spreading to poorer populations. We perceive risk differently, depending on control, interests, or context. Why do these antibiotics not work to kill viruses and cure people of viral infections? B cells; CR2 a. a virus-encoded Fc receptor 30 seconds. The Zika virus is most commonly transmitted by. c. fall below 1000 cells/l d. phagocytosis. - Allergens activate the immune system. Which of the following virus types inserts a double-stranded DNA copy of its genome into the host cell's genome? a. A. green algae are often unicellular, while land plants are not B. land plants have plastids and green algae do not C. algae have alternation of generations but land plants do not D. land plants have cell walls containing cellulose but green algae do not Allergens are substances that affect us by ______. d. Epstein-Barr virus True or false: Our bodies often reduce the effects of toxic substances by eliminating them through our breath, sweat, and urine. Choose the statement that correctly describes HIV and HBV. - improved sanitation Its function most resembles b. polysaccharides - Allergens act as antigens and stimulate the production of specific antibodies. This is an example of d) ability to remove all viruses from the infected host. Potential routes of exposure to toxins in the environment. Which of these is not a consideration of toxicology? (Use one word for your answer.). Random genetic mutations create antibiotic-resistant individuals that survive and multiply to develop into an antibiotic-resistant colony. Which of the statements below accurately captures the relationship between toxicity and potency? A. HIV is deadly, but doesn't target key cells in the immune system. The water will mostly move from side "A" to side "B" because the water concentration is higher on side "A.". A variety of respiratory diseases in humans can be caused by adenoviruses. f. SH2D1A. 25 ppm - Ospreys. e. CD18. b. hyper IgM syndrome caused by deficiency of CD40 ligand - Though cells have repair mechanisms to restore damaged DNA, there is no safe threshold for exposure to mutagens as the repair process may be flawed. answer choices Viruses are much smaller than bacteria cells. Persistence of chemicals can be a concern for health because such ______. Where in the bacteria would you expect to find the enzymes needed to perform photosynthesis? - Our focus on reducing pollution to protect human health has neglected risks to natural ecological systems that may be of greater ultimate importance. 13-42 Epstein-Barr virus infects and establishes latency in _____, gaining entry by binding to _____. Water-soluble types - These substances move widely in the environment and also have ready access to body cells as their solvent is ubiquitous transcriptional regulators of HLA class II loci. d. active transport. b. gp120 When iodine and starch are mixed together, they form a bluish-black compound that is easily seen. b) Replication of their genomes does not involve proofreading. What is the current trend in the worldwide mental health disease burden? This could be best used as a simple model for d. massive production of IL-2, IFN-, and TNF- error prone replication of its DNA genome. c. bacteria and yeast a. Solutes are never able to cross the membrane. c. nucleic acids. Cells naturally, without using energy, respond to changes in water concentration through the process of You place a small drop of the blood on a slide, add a drop of strong saline (salt) solution, and then cover all of it with a coverslip. d. superantigen Which of the following statements explains why, despite these probability calculations, people perceive driving as less risky and are more accepting of the associated risks? About Us: If your goal is to build a career that makes a difference, consider joining the dedicated people of the Colorado Department of Human Services(CDHS). d. carrier proteins. d. sodium ions (Na+), hydrogen ions (H+), sugars, and amino acids, a. water (H2O), carbon dioxide (CO2), oxygen (O2). Viruses can reproduce only using a host cell. a. channel proteins d. the use of antibiotics. 13-24 All of the following are X-linked immunodeficiencies except _____. The two strands of DNA separate and serves as a template, and the daughter molecule will have a mix of an old and new strand. They produce proteins used by other parts of the cell. 13-34 Which of the following explains why Streptococcus pneumoniae can infect an individual recurrently? we are exposed to many sources of harm, and it is difficult to separate the effects of different hazards in order to evaluate their risks accurately. c. the expression of MHC class I and class II molecules d. Both membranes consist of two concentric phospholipid bilayers and neither is selectively permeable or has pores. b. a worker in a factory who places labels on products and then packs them into a shipping box The water will mostly move from side "A" to side "B" because the water concentration is higher on side "A." 4. A. Correct Response 13-50 Which of the following deficiency syndromes affects T-cell but not B-cell function? The 2015 outbreak of the Zika virus was especially concerning as infected pregnant mothers were having babies with ______. b. prokaryotic and animal a) The gp120 glycoprotein would no longer be able to bind to the CCR5 receptor. Response curve representing no response for low doses - Line c. The idea of hormesis, the nonlinear effect of a toxin in which a low dose is ______ and high dose is ______, was misapplied in a 2018 rule proposed by the EPA that suggested a little pollution was beneficial to health. a) They can be spread via the plasmodesmata. - an ecological disease Match each of the potential toxins listed below to their most likely routes of exposure. Poisons that are produced naturally are called ____________ substances. a) Fasting blood glucose from 120-180 mg/dL b) Fasting blood glucose from 126-140 mg/dL c) Fasting blood glucose from 110-125 mg/dL d) All of the above 7) All of the following drugs are oral hypoglycemic drugs, Except a) Metformin b) Sulphonylureas c) Thiazolidinediones b. NADPH oxidase; produce superoxide radical (-) b. Haemophilus influenzae You and your parents may disagree about the risk associated with your exposure to tobacco or alcohol. c. No; although prokaryotic cells are comparatively less efficient than eukaryotic cells, they are still able to carry out the processes necessary for survival and reproduction. The odds of being involved in a car accident are about 1 in 100 while the odds of being involved in an airplane accident are about 1 in 5,000. The solution level on the left side of the figure would rise while the solution level on the right side of the figure would decrease. B. HIV is able to hide from the immune system. The tertiary structure consists of eight beta-strands connected by -helices (known as the globin fold) Hemoglobin is a tetramer composed of two different types of globin subunits, each of which has an O 2 binding site Question: You have to implement the following methods on the described scenario. True or false: Mortality refers to being ill, whereas morbidity refers to dying from a disease. Some viruses have an external membrane envelope. c. the use of other types of bacteria. There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. This study was reported . A virus must use its host-cell processes to replicate. a. adenosine deaminase (ADA) "Approximately 88% of our 2022 revenue came from technology-enabled business solutions. a. C. Viruses contain organelles while bacteria cells do not. a. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. True or false: All species have approximately the same reaction to a specific compound. You buy a bunch of small, round, red radishes at the grocery store; they are on sale because they have been sitting in the produce aisle for a while. b. the virus escapes from the phagosome into the cytosol a. A protein molecule, transferrin, embedded in the plasma membrane recognizes iron molecules and causes the plasma membrane to fold in around the iron and take it into the cell. - Most organisms tolerate some exposure to a toxin but ultimately the dose gets large enough to kill them. Most amphibian species are susceptible to the fungus that causes Chytridiomycosis, which is spreading rapidly likely due to environmental changes. Trauma - Car accidents d. The water will not move at all because the water concentrations are isotonic. Why are animals still used to test toxicity of substances? b. T cells; CD4 How do these molecules arrange themselves to form a mostly impermeable barrier between a liposome and its environment? The chemical reaction caused the organophosphates from the detergent to chemically combine with lipids from the oil to form phospholipids with hydrophilic heads and hydrophobic tails. Most substances are toxic at some level of exposure depending on the substance and the nature of the exposure. Correctly match the environmental disease agent to its example. a. lymphocytes and platelets b. Proviruses consist of double-stranded DNA. Response - Vertical (y) axis Other IMG plans that may be of interest. c. Epidemics; pandemics - Chronic conditions such as cardiovascular disease and diabetes are increasing and spreading to poorer populations. They are only capable of reproducing once inside a living host cell. c. transporter associated with antigen processing (TAP) What is the current concern with using Sprague-Dawley rats in toxicology studies? Which of the following correctly characterizes white-nose syndrome? a) III c) the proteins in the host's cytoplasm Which of the following statements correctly describes how factors related to the individual influence how she or he responds to toxins in the environment? The water will mostly move from side "B" to side "A" because the water concentration is higher on side "B." b. fall below the CD8 T-cell count 1. - Diet-related obesity can lead to illnesses such as diabetes and cardiovascular disease. d. Listeria monocytogenes Match the examples to chronic or acute effects and exposures. d. it made plymouth a royal colony c. facilitated diffusion d. factor D b. sodium ions (Na+), hydrogen ions (H+), sugars, and amino acids Which one of the following statements best describes the role of B cells and T cells in the human body? d. they cause less severe immunodeficiency than do the homozygous recessive forms a. transcriptional regulators of HLA class II loci What can be concluded about policy decisions addressing hazardous and toxic nutrients based on the U.S. Environmental Protection Agency's assessment of relative risks to human welfare? b) copies of the herpesvirus genome remaining as mini-chromosomes in some host cell nuclei 13-45 Which of the following is not a characteristic of staphylococcal enterotoxins? O Enveloped viruses do not have protein spikes. b. exocytosis. Which cell that was viewed is most likely a prokaryote. Antiviral drugs that have become useful are usually associated with which of the following properties? Which of the following are environmental disease (health) agents? 13-35 Protective antibodies generated in response to influenza virus bind to _____ of the viral envelope. What factors make emergent diseases a special problem? - Our increasing ability to detect traces of a substance sometimes means that though we can detect it, the level may be too low to cause harm. mutations are introduced into the virus. - personal ignorance about the hazard Which of the following statements is true of chloroplasts? We assert that combining expertise . Which of the following statements accurately describes plant virus infections? c) Vertical transmission is the spread of viruses from the upper leaves to the lower leaves of the plant, and horizontal transmission is the spread of a virus among leaves at the same general level. Viruses are typically a piece of genetic material encased in a protein capsule. a. CD4 Show transcribed image text a. integrase b) IV The possibility of suffering harm or loss resulting from a given action is referred to as ______. Over time, the students sitting in the far corner of the room would smell the perfume. 2. Choose the following statement that most accurately describes viruses. At its 5 end, the RNA genome has a viral protein (VPg) instead of a 5 cap. 13-8 _____ is a strategy used by herpesviruses where replication and the generation of virus-derived peptides are avoided in order to hide from the immune response. Which of the following statements accurately describes a viral envelope? Why do scientists classify viruses as non-living? Which of the following is/are part of accepted cell theory? b. hemagglutinin b) enter a replicative cycle that kills the host cell. b. channel proteins You isolate an infectious substance that is capable of causing disease in plants, but you do not know whether the infectious agent is a bacterium, virus, or prion. d. cytosol. Chediak-Higashi syndrome caused by the deficiency of CHS1. Traditional reliability design methods describe the dispersion degree of soil parameters with their point variance without considering the influence of correlation distance. a. it created the massachusetts bay colony. a. osmosis Using this kind of framing camera to diagnose the internal hot spot causes the light emitted from the same point in the target to appear at different positions on different frames, resulting in framing images that cannot accurately judge the evolution process of implosion, which seriously affects the accuracy of the measurements. a. susceptible individuals; immune individuals Toxic substance - These substances damage or kill living organisms because they react with cellular components to disrupt metabolic functions. Culture the substance by itself on nutritive medium, away from any plant cells. Increased frequency:increased depth of penetration B. Immune responses against S. pneumoniae are serotype-specific and protect only against strains that possess the same capsular polysaccharide antigens. b. class II transactivator (CIITA) The plasma membrane of some white blood cells contain ________ that bind with proteins of cells such as bacteria that have invaded the human body. ", lethal dose of a chemical for half of the population. b. the sequence of the conserved X box of the HLA class II promoter This cell is weighed and then placed in a beaker of 3 percent iodine dissolved in water. c. the ER lumen. A long piece of ribbon wired along both long edges is twisted into a helix and wrapped around individual pipe cleaners that have been rolled into spools; this grouping is then twisted (super coiled) again to condense it. c. innate; acquired immune responses Q. What do you expect to happen to the weight of the cell over time and what can you deduce from the color change? Viruses are very diverse. a) Viruses are smaller in size than bacteria. c) re-infection by a closely related herpesvirus of a different strain b. anti-HIV antibodies are detectable in their blood serum X=111110201X. Which of the following statements are reasonable conclusions that can be drawn from a recent headline that announced the discovery of 23 pesticides in 16 food samples? Differences in physiology, metabolism, and body size result in species reacting ______ to a specific compound, which makes human risk difficult to estimate. Cancer d. They cause excessive synthesis and release of cytokines. b. MHC class II chain Chemicals or other factors that specifically cause abnormalities during embryonic growth and development are called ___________________. e. A cDNA intermediate is required in order to produce a provirus. 13-20 Dominant mutant forms of IFNR1 exhibit all of the following in heterozygotes except _____. b. Dog bites and bee, wasp, or hornet stings - These have risks between 1 in 46,562 to 1 in 115,111. County employees are subject . d) Reverse transcription would no longer be possible. Which of these statements correctly describes trends in child mortality? This problem has been solved! d. superantigens 13-18 Which of the following is not associated with bacterial infection due to a genetic defect in or pathogen-induced subversion of normal phagocytic processes? c. Streptococcus pyogenes b. I would expect to find the photosynthetic enzymes associated with the plasma membrane of the bacteria. Explain. Which viruses have single-stranded RNA that acts as a template for DNA synthesis? Job offers for selected candidates will be made the week of May 1, 2023. A defense mechanism that repairs the damage caused by a toxin would create a _______________ response curve; a minimal dose is necessary to induce an observable effect. a. Wiskott-Aldrich syndrome caused by deficiency of WASP a. water (H2O), carbon dioxide (CO2), oxygen (O2) d. palisade mesophyll, Which of the following would be the best analogy for the function of the Golgi apparatus? Which of the following statements accurately describes plant virus infections? - Most people will tolerate a higher probability of occurrence of an event if the harm caused by that event is low. d. There will be no net movement of water because the solutions are isotonic. A solid waste (garbage) transfer facility that sorts and breaks down garbage into recyclables and waste to be thrown away in the landfill would be a suitable analogy for which cellular organelle? d. the proteasome cannot generate viral peptides for presentation by MHC class I molecules. b. Which of the following is a reasonable and possible explanation of the experimental results? Which statement accurately describes capitalism? What characteristics define an emergent disease? Which of the following statements accurately describes the process of DNA replication? a. smooth ER c. lysosome e. Listeria monocytogenes. Select one or more: O a. Once the amoeba's pseudopodia completely surrounds the other protozoan, the amoeba's plasma membrane pinches off by folding back into the amoeba and creating a vesicle containing the smaller protozoan. b. susceptibility to Neisseria Which of the following statements about viruses is false? Contrary to the risk probabilities, we are often willing to accept far greater risk than the general threshold ______. It is rising in both developing and developed countries. Lead was banned from gasoline and paint in the 1970s and health problems associated with its exposure have dropped significantly since then. The standard GNSS-IR model typically considers soil to be a single layer of medium and measures the average SMC between 1 and 10 cm below the soil surface. a. rise markedly after T-cell activation c. facilitated diffusion Setting environmental health policy is challenging because ______. Which of the following statements accurately describes the properties of gases? - Reduced cancer risk c. The cell should gain weight over time because it is hypertonic to the beaker environment and water will enter the cell through osmosis. d. a. osmosis. d. inhibition of peptide transport by transporter associated with antigen processing (TAP) Electrotherapy Unit III PTA Ultrasound Quiz 1. 4. If a bottle of perfume were spilled in the corner of a large lecture hall, the students sitting near that corner of the room would very quickly smell the perfume. 13-30 Wiskott-Aldrich syndrome involves an impairment of _____. c. phagocytosis. On the basis of the experimental data and the gradient-less optimization approach, the modeling strategy and the parameterized equivalent dynamic finite element model are presented. The radish cells were hypotonic to the water in which they were soaking. 13-7 Genes encoding _____ rearrange in trypanosomes permitting replication and survival of the pathogen until the host produces an antibody response against the altered gene product. - Age affects susceptibility to toxins, as chemicals that might be relatively harmless to adults may be dangerous to young children. d. viruses are prokaryotic and bacteria are eukaryotic . d. The radish cells were hypotonic to the water in which they were soaking. The mosquito becomes infected when it feeds on the blood of a person infected with the virus. d. local populations; global populations. 13-16 All of the following are associated with superantigens except _____. c) removal of viral proteins 2. Fetal alcohol syndrome is a pattern of mental and physical defects that can develop in a fetus when a mother drinks alcohol during pregnancy. Find the general solution of the given system. Small fish eat zooplankton - The U.S. EPA estimates that 200 million Americans live in areas where cancer risk from environmental carcinogens is ten times higher than normal. - establish acceptable toxin levels at the highest amount that does not cause measurable effects or as low as technically feasible. c. Wiskott-Aldrich syndrome protein (WASP) a. This is an example of c. the IFN- receptor b. sorts proteins and lipids and sends them to their final destination. c. varicella-zoster c. smooth endoplasmic reticulum Which of the following statements are true about how people apply probability in determining how much risk to accept and when to avoid exposure to certain risks? a) III The POPs of greatest concerns include substances such as chloropyrifos and glyphosate; we are exposed to them primarily by ______ because they are used in the production of ______. The cell should lose weight over time because it is hypertonic to the beaker environment and water will leave the cell through osmosis. Predicting whether an individual will recover from a given disease.

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